Friction lining of automatic transmission torque converter
The friction lining is the main component of the torque converter, which transfers torque from the engine to the transmission. It usually consists of the following components:
Compound:
* Running surface: Made of heat and friction resistant material such as cellulose composite material or carbon fiber.
*Base: Made from durable material such as steel or aluminum to provide a secure attachment to the torque converter.
* Glue: Special glue is used to bond the work surface to the base.
* Protective Coating: An additional layer applied to the work surface to protect against wear and improve durability.
Function:
The friction linings of the torque converter perform the following functions:
*Torque Transmission: When the torque converter is filled with transmission fluid, the friction lining creates friction between the rotating components, transferring torque from the engine to the pump wheel.
* Vibration Absorption: The friction lining also helps absorb vibrations between the engine and transmission, ensuring smooth power transmission.
* Anti-Slip: Friction linings prevent slipping between rotating components, ensuring full power transfer.
Types:
There are different types of friction linings for torque converters, which differ in their characteristics and materials:
*Organic: Made from organic materials such as paper and cotton and provide good frictional performance at low speeds.
* Semi-metallic: Contains both organic and metallic materials to provide higher durability and coefficient of friction at higher speeds.
*Metal: Made from all metal materials such as steel and provide the greatest durability and heat resistance.
Maintenance:
Torque converter friction linings are consumables and require periodic replacement. The service life of friction linings depends on operating conditions, type of transmission fluid and service intervals.
Replacing torque converter friction linings is usually done during a transmission overhaul. Signs of worn friction linings may include slipping, vibration, or noise during gear changes.